The easiest way to find a good small press for you and your book is to submit to the small press whose books you enjoy reading.
This is true with any press, really. If you've never read their books they're not where you should be submitting, and if you don't like their books or find them flawed--grammar, punctuation, layout, writing and story in general, cover art, etc.--then they're definitely not a house to be considered.